SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
TECHNICAL
SPECIFICATION
FOR
11 KV RING MAIN UNIT
AND
FRTU
Page 1 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Page 2 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Index
RMU………………………………………………………………………………………………… 2
Record of Revision ...................................................................................................................... 5
1.0
Scope of work ........................................................................................................ 8
2.0
Codes & standards ................................................................................................ 8
3.0
Electrical Distribution System Data ...................................................................... 9
4.0
11kv RMU System layout ..................................................................................... 9
5.0
RMU panel construction ........................................................................................ 10
6.0
Load break switch (LBS) / Isolator ..................................................................... 12
7.0
Circuit breaker (TCB / FCB) ............................................................................... 14
8.0
Earth switch (ES) ................................................................................................. 15
9.0
Requirements of sealed housing live parts ....................................................... 15
10.0
Operational interlocks ......................................................................................... 16
11.0
Indication & signals (for SCADA / Local) ........................................................... 17
12.0
13.0
Earthing…………………………………………………………………………. 18
Mimic diagram, labels & finish ............................................................................ 18
14.0
Quality assurance ................................................................................................ 19
15.0
16.0
Inspection & testing ............................................................................................. 19
Shiping Handling and Site Support……………………………………………….20
17.0
Deviations ............................................................................................................. 21
18.0
Drawings Submission .......................................................................................... 21
Annexure A Scope of supply .................................................................................................... 22
Annexure B Technical particulars (Data by purchaser) ......................................................... 24
Annexure C Guaranteed Technical Particulars (Data by Supplier) ...................................... 25
Annexure D Recommended spares (Data by supplier) ......................................................... 32
Annexure E Typical scheme of RMU ....................................................................................... 33
Annexure F Drawing of Bimetallic Ring Type Lug .................................................................. 34
Annexure G Specification for Modem ...................................................................................... 35
Annexure H Specification For Feeder Remote Terminal Unit For RMU .............................. 36
Page 3 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Index
FRTU………………………………………………………………………………………………..37
Record of Revision……………………………………………………………………………..38
1.0.0 Feeder Remote Terminal Units: ..................................................................................... 39
1.1.0 FRTU Architecture ........................................................................................................... 39
1.1.1 Central Processing Module ............................................................................................. 39
1.1.2 I/O Module ........................................................................................................................ 40
1.1.3 FRTU Time and Date Facility ......................................................................................... 40
1.2.0 Functional Requirements ................................................................................................ 40
1.2.1 Input / Output Point Types .............................................................................................. 40
1.2.2 Status Inputs .................................................................................................................... 40
1.2.3 Control Outputs ................................................................................................................ 41
1.2.4 Input / Output Point Counts ............................................................................................. 42
1.2.5 Analog Inputs ................................................................................................................... 42
1.2.6 Programmable Logic Control (PLC) ............................................................................... 43
1.2.7 FRTU Data Communications .......................................................................................... 43
1.3
FRTU Enclosures........................................................................................................... 44
1.4
FRTU Power Supply ...................................................................................................... 44
1.5
SCADA/DMS Adaptation Services…………………………………………………… 45
1.6
FRTU Test Systems .................................................................................................... 46
1.7
Software / Firmware ..................................................................................................... 47
1.8.0 General ........................................................................................................................... 47
1.8.1 Diagnostic Software ........................................................................................................ 47
1.9.0 FRTU Testing ............................................................................................................... 49
1.9.1
1.9.2
1.10
1.11
Type Test………………………………………………………………………………………….49
Routine Test………………………………………………………………………………………49
FRTU Spares…………………………………………………………………………………… 49
FRTU Types…………………………………………………………………………………… .49
Annexure – 1: Guaranteed Technical Particulars ................................................................... 50
Annexure – 2: FRTU Adaptation bill of Material……………………………………………….52
Annexure – 3: IO List................................................................................................................. 55
Page 4 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Record of Revision
Revision
No
Item /
clause no.
Nature of Change
Approved
By
R5
1, Annex A
1.3,1.4
FRTU along with modem included in the scope of
supply of RMU
DS
R5
1, Annex.
1.6
Supervision of Testing & commissioning of all motorized
RMUs included in the scope including all operational
checks, LV wiring checks, battery / charger checks, VPI ,
FPI, self powered relay.
DS
R5
1, Annex
1.7
Testing & commissioning of FRTU at site -FRTU
customization, parameterization along with integration of
FRTU with Control Center included in the scope of
Vendor
DS
R5
1, Annex.
1.8
Guarantee period for RMU along with FRTU & Modem
specified as 66months from date of supply & 60 months
from date of commissioning.
DS
R5
R5
1, Annex.
1.9
1, Annex.
1.11
2
4.4.1
R5
4.7
R5
4.8
Modem specification included in Annexure G
DS
R5
5.6
Added – Operating Handle support
DS
R5
5.13.3
Cable termination height is increased to 900 mm.
DS
R5
5.14.2
R5
5.24
R5
6.3.1
Separate ON/OFF switching for each motor is added
DS
R5
6.4.2
Clause deleted as all RMU’s shall be motorized
DS
R5
6.5
Added – Indication for Battery charger FAIL, Battery
LOW, Reverse polarity
DS
R5
R5
Service performance requirements during guarantee
period specified.
Training requirements for RMU, FRTU & Self powered
relay specified.
IEC 62271 specified
Solid Shielded Insulation Added
FRTU requirements with modem added along with
detailed specification
Bus bar short time withstand capacity changed to 20kA
for 3 sec
Added – Avoid any type of Gaps or holes on the cable
termination chamber wall.
DS
DS
DS
DS
DS
DS
DS
Page 5 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
R5
6.5.4
Included provision of 2nos AC incoming supply MCB
DS
R5
6.6.2
LBS short time withstand capacity revised to 20kA for 3
Sec
DS
R5
6.7
LBS fault making capacity revised to 50kA peak
DS
R5
6.8
Mechanism endurance class M1 and Electrical
Endurance class E3 specified
DS
R5
6.9
Minimum no. of operations at rated fault current
specified – Electrical endurance class E3
DS
R5
6.10
Fault Passage Indicator specifications included
DS
R5
7.2
CB arc interruption medium only in Vacuum bottle
DS
R5
7.4
Added – Protective flap on Emergency PB
DS
R5
7.5.2
20kA short time withstand capacity specified
DS
R5
7.6
Mechanical – M1 & Electrical-E2 endurance class
specified for circuit breaker module
DS
R5
7.7
CB fault making capacity revised to 50kAspecified
DS
R5
7.8
DS
R5
8.7
CB fault breaking capacity revised to 20kA
No load mechanical endurance class M0 specified for
earth switch
R6
8.8
Making capacity endurance class E2 specified
DS
R5
10.6
Added – Prevent electrical operation if handle is
inserted for manual operation
DS
R5
10.6
Added – Supply to the motor shall be disconnected after
certain time period if LBS fails to operate.
DS
R5
10.7
‘Desirable’ feature of preventing Motorized operation of
more than one LBS at a time is changed to ‘Necessary’
Feature
DS
R5
12.1
Sticker type mimic diagram non acceptance specified
DS
R5
13.3
Process audit included in the Quality systems for RMU,
self powered relay, FRTU.
DS
R5
13.4
Approved sub vendor list specified for FRTU,FPI,
Battery charger, self powered relay
DS
DS
Page 6 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
R5
14.1
FRTU type test requirement specified
DS
R5
14.3
FRTU acceptance tests requirement specified
DS
R5
Annexure A
– 1.5
2 nos. is changed to 2 sets of Operating handle
DS
R5
Annexure C
– 21 to 26
Earth Switch , Self powered relay, FPI, CT, VPI , FRTU,
Modem details included in GTP particulars, to be
provided by supplier
DS
R5
Annexure F
BSES 11kV terminal connection lug dwg. – Bimetallic
Ring type, provided for supplier to provide suitable
terminal fixing arrangement at 11kV bushing.
DS
Modem specification.
DS
FRTU specification.
DS
R5
R5
Annexure
G
Annexure H
Page 7 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
1.0 Scope of work
11kV Manual (Motorized if specified in Tender) RMU with or without FRTU & Modem [R5] shall be
supplied as per the specification.
For scope of supply, refer annexure – A
Dismentalling and Transportation of existing RMUs from the Substations as it is condition to BSES
Store/Site within BYPL area, Testing & commissioning supervision of all manual / motorized RMUs with
FRTU included in the scope including all operational checks, LV wiring checks, battery / charger checks,
VPI , FPI, self powered relay etc as applicable.[R5]
2.0 Codes & standards
Materials, equipment and methods used in the manufacture of switchboards shall conform to the latest
edition of following –
S No.
Indian Electricity Rules
Indian electricity act
IS 3427
IS 9920 part 1,3 & 4
IS 13118
IS 3231
IEC 60265 part 1
IEC 60056
IEC 60059
IEC 60185
IEC 60694
IEC 60298
IEC 60129
IEC 60529
IEC 60255
Title
With latest amendments
IE act 2003
A.C. Metal Enclosed Switchgear and Control gear for Rated Voltages
Above 1 kV
High voltage switches above rated voltage 1kv
General requirements of circuit breakers above rated voltage 1kv
Electric Relays for Power System Protection
High voltage switches
High voltage alternating current circuit breakers
Preferred current ratings of high voltage switchgear
Current transformers
Specification for high voltage switchgear
AC metal enclosed switchgear
Ac disconnector and earth switches
Classification of degrees of protection provided by enclosures
Electrical relays
In the event of direct conflict between various order documents, the precedence of authority of documents
shall be as follows i. Guaranteed Technical Particulars (GTP)
Page 8 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
ii. Specification including applicable codes & standards
iii. Approved Vendor Drawings
iv. Other documents
3.0 Electrical Distribution System Data
3.1
Supply
3 phase AC, 3 wire
3.2
Voltage
11000 volt ±10%
3.3
Frequency
50 Hz ± 5%
3.4
System neutral
Earthed at upstream 11kv source
4.0 11kv RMU System layout
4.1
RMU Configuration
As per scheme given in Annexure E & type as per
Purchase requisition
4.2
Extensibility
One side extensible / Purchase requisition
4.4.1
Load break switch,
Circuit breaker & earth
switch in RMU panel
Insulation medium for
panel
4.4.2
Breakers
SF6 gas or Vacuum type (with disconnector & earth switch)
4.4.3
load break switches
SF6 gas or Vacuum type (With Earth Switch)
Arc interruption
i) Separate for each breaker
chamber for breaker
ii) Arc interruption chamber of breakers shall be separate
from the main insulated tank. (Desirable feature)
4.3
4.5
All shall be non draw out type, fixed position
SF6 gas or Dry air in sealed metallic tank
4.6.1
Maximum dimensions
for a 3 way panel (1 CB
+ 2 LBS)
Width (measured from
front)
1250 mm
4.6.2
4.6.3
Depth
height
4.6
800 mm
2000 mm
FRTU if required shall be provided integrated with RMU in
the LV compartment completely wired along with Modem
suitable for communicating in CDMA & GSM network of
Reliance Communication and also have facility to
communicate with RCIL fibre network. Vendor shall
Page 9 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
4.7
4.8
FRTU
demonstrate the data communication of FRTU modem with
BCC for the proposed modem for approval of owner in the
Pre Order technical evaluation stage.
For detailed specification of FRTU, I/O requirements , refer
our standard specification of FRTU ( Spec No :SP-FRTUX16-R0 )
Modem
As per Modem Specifications given in Annexure G
5.0 RMU panel construction
Metal enclosed, framed, Compartmentalized panel
Construction
Indoor, non air conditioned environment / Outdoor with
continuous ambient temperature of 50 deg C and shall be
suitable for external climatic condition Resistant to water
ultraviolet radiation (Canopy for outdoor application)
5.1
Panel type
5.2
Service Location
5.3
Mounting
Free Standing
5.4
Overall Enclosure
Protection
5.5
Doors
5.6
Covers
IP4X minimum, vermin proof
IP 54 (For outdoor duty)
Front access with anti theft hinge arrangement, Minimum
three hinges. Hinges arrangement shall ensure that door
cannot be removed. Common lock and key for additional
protection from theft.
Bolted for rear access, with handles. Support for handle
shall be provided at suitable place on RMU body. [R5]
All the accessible bolts / screws shall be vandal proof. One
set of required Special tools per RMU (if any) shall be in the
scope of supply.
5.7
Construction
Sheet metal 2.5mm thick CRCA
5.8
Base frame
300 mm - 450 mm height (made with ISA / ISMC) for Indoor
& Min. 500 mm for outdoor. Height to suit the operator’s
convenience & subject to drawing approval.
Frame shall be completely covered from all the four sides
by MS plate / sheet. Cable box compartment should be
extended up-to base-frame bottom to have metallic
separation between each of the feeders at base frame level
too. Painting should match with RMU shade
With fixing bolt for RMU & frame (in case the frame is
supplied loose) & foundation bolts.
HDPE clits as cable supporting clamps for each power
cable (to suit the cable size from 150 to 300 sq mm PILC /
XLPE cable. Exact size shall be provided during drawing
approval stage.)
5.9
Lifting lugs
Four numbers
Bottom
Page 10 of 55
SP-ERMUX-15-R5
5.10
Technical Specification For 11 KV Ring Main Unit & FRTU
3mm metallic, removable type & split type in two parts, with
1no. 90 mm diameter knocks out punch/hole in the centre
Cable Entry
(For double cable boxes, Un-drilled gland plate to be
supplied. Approval should be taken for the same during
drawing submission)
5.12
Cable type & size
3c x 150 / 240 / 300 sq mm Aluminum conductor XLPE/
PILC with armor & PVC outer sheath
5.13
Terminals for 11kv
cable termination
Suitable for Ring Type Bimetallic lug as per annexure F
[R5]
5.13.1
Right angled boots
Single piece cold shrink type ( make – 3M or Raychem)
5.13.2
Brass Nut bolt
M16 size
5.13.3
Bimetallic washers
Required
5.13.4
Termination type
suitable for heat shrinkable type
5.13.5
Termination height
5.14
Bus bar
For Indoor / Outdoor : Min. height from gland plate shall be
900mm [R5]
Tinned copper with sleeve (Sizing Calculation to be
submitted in support of its Guaranteed S.C. rating /
Capability)
5.14.1
Bus bar continuous
rated current
630amp ( at designed 40 deg.C ambient)
5.14.2
Bus bar short time
withstand capacity
20 KA for 3 sec (R5)
5.14.3
5.14.4
5.15
5.16
5.17
5.18
Bus bar support
insulator material
Maximum temperature
rise above reference
ambient 40 deg C
Earth bus bar
Earth bus internal
connection to all
non current carrying
metal parts
Earth bus external
connection to
owners earth
SMC / DMC resin
In line with Table 3 of IEC60694
GI flat sized for rated fault duty for 3 sec
By 2.5 sq mm copper flexible wire, Earth connection point
maximum 1 meter away from cable test facility
Studs on both sides with holes for M10 bolt + hardware to
readily receive purchaser earth connection
Cooling arrangement
By natural air without fan
Panel internal wiring
Multi strand flexible color coded PVC insulated Cu wire 1 sq
mm (SCADA) / 2.5 sq mm (for CT’s) 1100 volt grade (AC-
Page 11 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
5.19
black, DC – grey, Earth – green) with ferrules at both ends.
5.18
Hardware (Nut, bolts &
handle)
Stainless steel (Except termination nut-bolts
which are Brass / Tinned Copper)
5.19
Gasket
Neoprene rubber
5.20
Marshalling terminal
Blocks
1 Sq mm, Nylon 66 material, screw type + 20% spare in
each row of TB.
5.21
Panel cover fixing bolts
Allen head 6mm with hexagonal slot
5.22
Padlock facility
Required for all earth switches & all handles
5.23
Bushings for future
extensions of RMU
Should be duly insulated & covered with
metallic covers in unused condition
Explosion vents
To ensure operator’s safety, design should ensure that
gases / flames generated during flash over / blast in any of
the compartment, must not come out from the front of RMU
as well shall not go to adjacent cable compartment. Internal
arc test report (for Cable compartment & other
compartments) must be submitted to support above, along
with RMU GA drawing indicating these vents. There shall
not be any type of holes, gaps etc on the walls of cable
termination compartment. [R5]
5.24
6.0 Load break switch (LBS) / Isolator
6.1
6.2
6.3.1
6.3.2
6.4.1
Type
Arc interruption in
dielectric medium
Operating mechanism
for close / open
Manual operation
Addition / removal of
Motor
6.4.2
6.4.3
Motor rated voltage
6.5.1
Battery type & size
6.5.2
Battery charger rating
Battery charger
configuration
MCBs at charger input
& output
6.5.3
6.5.4
Three poles operated simultaneously by a common shaft
SF6 or Vacuum
Motorized LBS Each motor shall be provided with separate
MCB or Local-Remote switch. [R5]
Possible without removal of motor
Without overhaul of operating mechanism
Clause deleted. [R5]
24V DC
1. SMF lead acid battery
2. Battery provided in enclosure shall be rated for 10
close & 10 open operations of LBS / FCB + 2 hrs
back up for SCADA FRTU load (10watt).®
Battery Charger redundant & rating 10A each
With auto changeover between two chargers using 10Amp
Diodes
Required 2nos for AC Incoming supply All the MCBs shall be
Page 12 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
easily accessible for operation, with proper labeling. [R5]
6.5.5
6.5.6
6.5.7
6.6.1
6.6.2
6.7
6.8
6.9
6.10
Supply
Charger temperature
rise at heat sink at full
load for 2 hours
DC power supply for
FRTU
Battery charger cooling
Method
Continuous rating of
LBS
Short time withstand
Capacity
Fault making capacity
Minimum number of
operations at rated
current (as per IEC
62271-102)
Minimum number of
operations at rated fault
current (as per IEC IEC
62271-102 )
Maximum 55 deg C above ambient of 40 deg C
24v DC +/- 1 volt thru 2 Amp MCB
Natural without any fans
630 Amp at design 40 deg C ambient
20 KA for 3 sec [R5]
50 kA peak [R5]
Mechanical Endurance – Class M1( 1000 operations)
Electrical Endurance – Class E3 (100 operations) [R5]
Class E3 (Min 10 operations) [R5]
To be provided on right hand side of one LBS for panel type
Fault passage indicator 1CB + 2 LBS. For all other configuration of RMU, FPI to be
(FPI)
provided on all LBS. Wherever, there are two cables per LBS,
two FPI needs to be considered for that particular LBS.
6.10. 1
Earth Fault Indicator
CBCT – Split open type suitable for mounting without
disconnection of cable.
6.10.2
Connection of CBCT
with FPI
Cable connection of FPI with CBCT shall be of pre moulded
type on the CBCT side. Cable shall be 2.5 sq.mm cu cable or
fiber cable
6.10.3
Digital type and shall operate as the current exceeds the set
value. Flash indication for identifying faults with red LED with
one flash for every one sec. Test & rest button 1 NO + 1 NC
Fault Passage Indicator potential free contact for remote indication FPI power supply
unit shall use lithium battery with minimum life of 1000 blinking
hours , so that FPI shall continue to function even after main
feeder has tripped.
6.10.4
6.10.4.1
6.10.4.2
6.10.4.3
Data by Purchaser
System Fault Level
Type of Grounding
Fault clearing time
2kA – 8.75kA
Solidly Grounded
100ms
Page 13 of 55
SP-ERMUX-15-R5
6.10.4.4
6.10.4.5
6.10.4.5.1
6.10.4.5.2
6.10.4.5.3
Technical Specification For 11 KV Ring Main Unit & FRTU
Cable Type
PILC / XLPE , 70 sq.mm to 300 sq.mm
Earth Fault Indicator
Sensing Current
100 to 240A
Sensing Time
30 to 100 ms in steps of 10ms.
Reset Time
0.5 -1-2-3-4 hr
6.10.4.5.4 Resetting Facility
a) Self rest after reset time
b) Self rest after restoration of voltage
c) Manual
d) Remote resetting
6.10.4.5.5
6.10.4.5.6
6.10.4.5.7
6.10.4.5.8
1A at 230 V
IP 54
Surface or Flush Mounting
-20 to 55 Deg C
Contact Rating
Degree of Protection
Mounting Arrangement
Ambient Temperature
7.0 Circuit breaker (TCB / FCB)
7.1.1
7.1.2
7.1.3
7.2
7.3.1
7.3.2
7.3.3
7.3.4
7.4
7.5.1
7.5.2
7.6
7.7
7.8
Type
Transformer circuit
breaker -TCB
Feeder circuit breaker FCB
Arc interruption in
dielectric medium
Operating mechanism TCB
Operating mechanism FCB
Addition / removal of
Motor
Motor rated voltage
Emergency trip / open
push button
Continuous rating at
design 40 deg C
Ambient
Short time withstand
Capacity
Minimum number of
operations at rated
current (as per IEC
62271-100)
Fault making capacity
Fault breaking capacity
Three pole, operated simultaneously by a common shaft
For controlling transformer, manual operation only
For controlling cable feeder, manual operation. Remote trip
operation by SCADA
Vacuum Bottle (R5)
Manual spring charged stored energy type
Motor & manual spring charged stored energy type, remote
electrical close / open operation possible.
Without overhaul of operating mechanism
24v / 48v DC
On panel front with Protective flap to prevent any accidental
tripping of breaker. [R5]
630amp
20 KA for 3 sec (R5)
Mechanical Endurance – Class M1( 2000 operations)
Electrical Endurance – Class E2 ( R5)
50 KA peak (R5)
20 KA Minimum (R5)
Page 14 of 55
SP-ERMUX-15-R5
7.9
7.10
7.11
7.12
7.13
7.14
7.15
8.0
Earth switch (ES)
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
9.0
Technical Specification For 11 KV Ring Main Unit & FRTU
Maximum number of
operations at rated
Electrical Endurance – Class E2 . To be guaranteed by
Fault current (as per
manufacturer with authorized lab test reports (R5)
IEC 62271-100)
Breaker status auxiliary
2NO + 2NC wired to terminal block
contact
1. 75-300 / 1 amp for TCB/ FCB.
Current transformer
2. Considering three core cable terminations, mounting
flexibility shall be provided for CT’s (in horizontal &
vertical direction both). Additionally, CAUTION
marking (by sticker/ paint) shall be provided to avoid
CT’s installation above the screen of cable. (I.e.
earth potential point.)
CT accuracy class
10P10 minimum
Self powered, Microprocessor based Numerical relay (with
LCD display), IDMT over current / earth fault protection with
Protection relay
high set element, manual reset type Relay mounting flush to
panel front
Relay auxiliary contacts
Potential free contact 1NO + 1NC wired to
for remote
terminal block
indication
Shunt trip 230v AC (for
WTI trip & door limit
To be wired to terminal blocks (If the functional requirement
switch of Dry type
is achieved by the Protection relay, then shunt trip is not
transformer) & for
required.
remote trip from
SCADA.
Type
Switching in dielectric
medium
Operating mechanism
for close & open
Fault making capacity
Auxiliary contacts
Disconnect switch (if
provided in series with
vacuum bottle)
Minimum number of
operations at no load
(as per IEC 62271-102)
Making capacity
endurance of earth
switch (as per IEC IEC
62271-102 )
Three Pole, operated simultaneously by a common shaft, for
each Circuit breaker & Load break switch.
Dry Air in sealed medium or SF6 gas
Manual
50 kA (Desirable)
1NO+1NC wired to terminal block
Desirable to be located on purchaser cable connection side
of vacuum bottle
Mechanical Endurance – Class M0( 1000
operations) [R5]
Class E2 (Min 10 operations) [R5]
Requirements of sealed housing live parts
Page 15 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
9.1
Stainless steel enclosure suitable for IP67
9.2
Enclosure
SF6 gas pressure low
alarm
9.3
Provision for SF6 gas
filling
To be given (For ‘sealed for life’ design of RMU, this is not
applicable)
9.4
9.5
9.6
To be given
Provision for SF6 gas
pressure
indication
Manometer with non return valve
Arc interruption method
for SF6
breaker / Load break
switch
Puffer type / rotating arc type
Potential free contacts
for SF6 gas
pressure low
1NO +1NC (Desirable)
10.0 Operational interlocks
10.1.1
10.1.2
10.1.3
10.2
10.3
10.4
10.5
10.6
Interlock type
Load break switch &
respective earth switch
Mechanical
Only one in ‘close’ condition at a time
Circuit breaker &
respective earth switch Only one in ‘close’ condition at a time
Prevent the removal of
respective cable covers
if load break switch or
circuit breaker is ‘ON’
Electrical / Mechanical
Prevent the closure of
load break switch or
circuit breaker if
respective cable cover
is open
Electrical / Mechanical
® clause deleted
Cable test plug for
LBS/CB accessible
only if Earth switch
connected to earth
Mechanical
For motorized RMUs
Electrical / Mechanical
Prevent motorized
Electrical signal shall cut-off completely during manual
operation of LBS / CB
operation. If LBS fail to operate, the supply to motor shall be
during manual
disconnected after certain time period to prevent burning of
operation
motor due to continuous supply. [R5]
Page 16 of 55
SP-ERMUX-15-R5
10.7
Technical Specification For 11 KV Ring Main Unit & FRTU
Prevent motorized
operation of more than Necessary feature (Electrical) [R5]
one LBS / CB at a time
11.0 Indication & signals (for SCADA / Local)
Operation counter on
11.1
To be provided for each LBS & Circuit breaker, with minimum
four digits & non resettable type
11.9.1
front / Inside the RMU
LT chamber
Cable charge status
indication for all LBS &
CB
Spring charge status
indication
Earth switch closed
indication (For Each
LBS)
Load break switch
ON/OFF indication
Circuit breaker On/OFF
indication
Circuit breaker
protection relay
operated on fault
Fault passage
indication on LBS
Status signals to
SCADA-to be wired to
marshalling terminal
block
LBS close / open
11.9.2
LBS & CB Earth Switch potential free contacts
11.2
11.3
11.4
11.5
11.6
11.7
11.8
11.9
Capacitor type voltage indicators with LED on all the phases
(Shall be clearly visible in day light)
On front for breaker
On front
Green for OFF / Red for ON
Green for OFF / Red for ON
Flag
Flag
2NO + 2NC
potential free contacts
close /open
11.9.3
11.9.4
11.9.5
11.9.6
11.9.7
11.10.1
11.10.2
11.10.3
Battery charger Fail
CB close / open
Protection relay
operated
FPI operated
SF6 gas pressure low
Commands from
SCADA- to be wired
to marshalling terminal
block
potential free contacts
potential free contacts
potential free contacts
potential free contacts
potential free contacts (Desirable)
LBS close / open
FCB close / open
FPI Reset
Page 17 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
12.0 Earthing
Earthing
1. Each earth Pit shall comprise of the following :
A) 1 No Molecularly copper bonded solid low carbon steel earth electrode with dia of
14.2 mm as per UL 467-2007 of 3 Mtr length copper thickness of 250 microns
B) 1 Bag ( 50 pound / 22.65 Kgs ) grounding backfill Carbon compound
As per IEEE 80 Clause no 14.5d . The compound shall not corrode the Electrode. The
resistivity shall be lower than 0.12 OHM MTR as required in clause no 14.5 D of IEEE
80.
No of Earth pit shall be made by the vendor to achieve the earth resistance below 1
OHM or engineer in-charge satisfaction. Earthing to be done at the site where new
RMU is to be installed.
C) One No. suitable GI clamp with SS Nut & Bolt for connecting strip- The below said
material to be provided by vendor as required at site
2. GI STRIP 25X6 ( 1.2 Kgs = 1Mtr )
3. GI STRIP 50X6 ( 2.5 Kgs = 1Mtr )
4. ERECTION of the above in Normal Soil
13.0 Mimic diagram, labels & finish
Mimic
13.1
Operating Instructions
13.2.4
Name plate on panel
front
Material
Background
Letters, diagram &
border
Process
13.2.5
Name plate details
13.2
13.2..1
13.2.2
13.2.3
1. Mimic diagram (Shall not be accepted with Stickers)
[R5]
2. On panel front with description of function & direction
of operation of handles/buttons
Operating instruction chart and Do’s & Don’ts in Hindi / local
language to be displayed on left / front side of panel
enclosure on anodized Al Sheet 16SWG, duly affixed on
panel.
Fixing by rivet only
Anodized aluminum 16SWG / SS
SATIN SILVER
Black
Etching
Month & year of manufacture, equipment type, input &
output rating, purchaser name & order number, guarantee
Period
Page 18 of 55
SP-ERMUX-15-R5
13.3
13.4
13.5
13.6
13.7
Technical Specification For 11 KV Ring Main Unit & FRTU
Labels for meters &
Anodized aluminum with white character on black
indications
background OR 3 ply lamicoid
Danger plate on front & Anodized aluminum 16 SWG with white letters on red
rear side
background
Painting surface
Shot blasting or chemical 7 tank process
preparation
Powder coated epoxy polyester base grade A, shade -RAL
Painting external finish
7032, uniform thickness 60 micron minimum
Powder coated epoxy polyester base grade A, shade -white,
Painting internal finish
uniform thickness 60 micron minimum
14.0 Quality assurance
14.1
14.2
14.3
14.4
14.5
14.6
14.7
14.7.1
14.7.2
14.7.3
14.7.4
14.7.5
Vendor quality plan
Inspection points in
quality plan
Quality – Process
Audits
Field quality plan
Spare part list
Maintenance manual
Approved sub vendor
List
RTU
Fault Passage
Indicator
Battery Charger
Self Powered O/C &
E/F Relay
Boots
To be submitted for purchaser approval
To be mutually identified & agreed
BSES shall carryout vendor process audits.
Bidder to submit field quality plan along with the bid
Bidder to submit detailed spare part list along with the bid
Bidder to submit maintenance manual along with the bid
[R5]
ABB / Chemtrol / Schneider
Flair / EMG - Easi
Allan
Ashida ADR141S / VIP 300
3M / Raychem
15.0 Inspection & testing
15.1
15.2
Type test
Routine test
1. Equipment of type tested quality only, including
internal arc test on various compartments like cable
chamber, SF6 gas tank etc.
2. Type test certificate to be submitted along with offer
for scrutiny. Type test more than 5 years old will not
be acceptable.
3. For motorized RMUs – Bidder to submit following
test report for DC charger. ®
a) temperature rise test
b) voltage regulation test
As per relevant Indian standard
To be performed in presence of purchaser at manufacturer
Page 19 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Works
1. Physical inspection & BOM, wiring check
2. Insulation resistance test (Before & after HV test)
15.3
Acceptance test
3. HV test for one minute,
4. Operation & interlock check
5. Measurement of resistance of main circuit
6. Voltage Indication check
7. Functional testing of Fault passage Indicator for
Alarm
8. Primary current injection test for each circuit breaker
feeder with relay
9. Breaker closing & opening time measurement
16.0 Shipping, Handling and Site support
16.1
Packing Protection
Against corrosion, dampness, heavy rains, breakage and
vibration
16.2
Packing for
accessories and
spares
Robust wooden non returnable packing case with all the
above protection & identification Label
On each packing case, following details are required:
i. Individual serial number
ii. Purchaser's name
iii. PO number (along with SAP item code, if any) & date
iv. Equipment Tag no. (if any)
v. Destination
vi. Manufacturer / Supplier's name
vii. Address of Manufacturer / Supplier / it’s agent
16.3
Packing Identification
Label (Anodized
Aluminum Plate)
viii. Description (Configuration of RMU; e.g. 1CB + 2
ISO, Motorized / Non Motorized, Extensible / Non
Extensible) and Quantity must be prominently
displayed at least 3 sides of packing box & on top.
ix. Country of origin
x. Month & year of Manufacturing
xi. Case measurements
xii. Gross and net weights in kilograms
Page 20 of 55
SP-ERMUX-15-R5
16.4
16.5
Technical Specification For 11 KV Ring Main Unit & FRTU
xiii. All necessary slinging and stacking instructions
The seller shall be responsible for all transit damage due
to
improper packing.
Shipping
Handling and Storage
1. Manufacturer instruction shall be followed.
2. Detail handling & storage instruction sheet / manual
to be furnished before commencement of supply.
17.0 Deviations
17.1
List of deviations shall be stated in writing with the tender by reference to the
Specification clause / GTP/ Drawing. In absence of such a statement,
requirements of the Specification shall be assumed to be met without exception
by the Seller
18.0 Drawings Submission
18.1
18.1.1
18.1.2
18.1.3
18.1.4
18.1.5
18.1.6
18.1
18.2
18.3
18.3.1
18.3.2
18.3.3
18.3.4
18.3.5
To be submitted along with bid
The seller has to submit following:
GA / cross sectional drawing of product showing all the views / sections
Detailed reference list of customers using the offered product during the last 5 years
with similar design and rating
Completely filled GTP
Manufacturer's quality assurance plan and certification for quality standards
Type test reports for the type, size & rating of product / equipment offered
Complete product catalogue and Manual.
Recommended spare parts and consumable items for five years of operation and
spare parts catalogue with price list
All documents as per clause 13 of this specification
After award of contract, Seller has to submit following drawings for buyer’s Approval
(A) / Reference (R)
Program for production and testing (A)
Guaranteed Technical Particulars (A)
GA drawing
Schematic and wiring drawings for all components
Terminal arrangement & cable box details including gland plate arrangement etc
Page 21 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure A Scope of supply
1.0
The scope of supply shall include following
1.1
Design, manufacture, testing at manufacturer works before dispatch, packing, delivery and submission of
all documentation the 11kv Ring Main Unit (RMU).
1.2
11kV RMU shall be as per scheme enclosed as Annexure E.
1.3
FRTU along with necessary configuration softwares as per detailed specification in Annexure H [R5]
1.4
Supply of Modem for FRTU communication with Control Center as per specification in Annexure G.
SIM card shall be provided by BSES.
1.5
Configuration of 11kV RMU shall be as per Purchase Requisition.
1.6
Dismentalling and Transportation of existing RMUs from the Substations as it is condition to BSES
Store/Site within BYPL area. During dismentaling and installation of new RMU possible by-pass
connection of power cables to be made by the vendor, Testing & commissioning supervision of all
new motorized RMUs at site included in the scope of vendor including all operational checks, LV
wiring checks, battery / charger checks, VPI , FPI, self powered relay. Supervision of testing &
commissioning of all the panels at site. Vendor shall depute the service team with 2 days prior notice
from owner. [R5]
1.7
FRTU customization, parameterization along with integration of FRTU with Control Center has to be
carried out at all sites by vendor engineer. [R5]
1.8
Guarantee Period for RMU along with FRTU & Modem: 66 months from the date of supply or
60months from date of commissioning, whichever is earlier. [R5]
1.9
Service Performance Requirements During Guarantee Period: [R5]
a) RMU including battery charger: Complaint to be attended on urgent basis and to be resolved
within24hrs, 1day from intimation. Necessary spares may be maintained by vendor service team at
Delhi.
b)
FRTU: After reporting of FRTU modules compliant / failure, within 24 hours FRTU modules shall be
replaced by vendor at site. Spare cards / modules shall be maintained by the vendor at Delhi during
the guarantee period..
c)
Modem: After reporting of Modem compliant / failure, within 24 hours Modem to be rectified / replaced
by vendor at site. Spare modems if required shall be maintained by the vendor at Delhi during the
guarantee period.
1.10
1.11
Each RMU shall be supplied with 2 sets of Operating Handle. [R5]
Supply, installation, testing and commissioning of Battery & Battery Charger as per point no 6.5.1,
6.5.2, 6.5.3
Page 22 of 55
SP-ERMUX-15-R5
1.12
1.13
Technical Specification For 11 KV Ring Main Unit & FRTU
Supplier scope includes the Earthing in DT Substations as per point no 12.0 where RMU is to be
installed as per the instructions and satisfaction of the Engineer in-charge.
Supplier scope includes training of BSES team – 4 batches (each batch with 4-5 engineers) for
minimum 3 days at factory for erection, commissioning, maintenance trouble shooting of
mechanism, FPI and all other components. This shall be carried out 1 week from date of 1st
shipment/ dispatch. Supplier shall also provide training for Self Powered relay & FRTU at
respective manufacturer’ factory for 12 engineers/ technicians in 2 batches. [R5]
1.14
Unit price for Conversion kit should be offered separately for converting the RMU from single
cable termination design to double cable termination design, at site.
1.15
Sr No
BOQ as following –
Purchaser Equipment Tag No /
SAP code
RMU standard configuration
Type
Example – Type A2
Example – Type R5
1
2
3
4
Unit
Quantity
No
e.g. 1
2.0 Submission of documents
Documents as
given in clause
no 17 of
Specification
Along with offer
For Approval after award of
contract
Final after approval
3 copies + 1 soft
copy on CD
4 copies + 1soft
copy on CD
6 copies + 1 soft copy
on CD for all type of
documents
3.0 Delivery schedule
3.1 Delivery period start date
3.2 Delivery period end date
3.3 Material dispatch clearance
-
from date of purchase order
as agreed with supplier
after inspection by purchaser
Page 23 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure B Technical particulars (Data by purchaser)
Sr No
1.
2.
3.
4.
5.
Description
Reference design ambient temperature
Maximum ambient temperatue
Relative humidity
Seismic zone
Extensibility of RMU on one side is
required -
Data by purchaser
40 deg C
50 deg c for Delhi
e.g. 85% for Delhi
e.g. 4 for Delhi
Yes / No
Page 24 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure C Guaranteed Technical Particulars (Data by Supplier)
Bidder shall furnish the GTP format with all details against each clause.
Bidder shall not change the format of GTP or clause description.
Bidder to submit duly filled GTP in hard copy format with company seal.
Sr. No.
1
2
Description
11kv RMU ( as per scope of supply
annexure A)
Data to be filled by Manufacturer
Separate GTP to be filled for each type of
RMU
Equipment make
Equipment type / brand name
3
4
Conformance to design standards as per
specification clause no 2.0 –
Conformance to specification clause no
3.0 to 17.0 –
Yes/No
Yes/No
If NO for pt 3 or pt 4 above, Submission
5
of deviation sheet for each specification
Yes/No
clause no –
6
Panel overall dimensions in mm
Width (measured from front)
Depth
height
7
8
9
10
Panel weight in kg
Panel extensible on both sides – Yes /
No
Panel enclosure protection offered
Panel tested for internal arc (Cable &
other compartments) –Yes / No
11
Heat generated by the panel in Kw
12
Insulation level for complete panel
12.1
12.2
13
Impulse withstand (Kv peak) -70kvp min
Power frequency withstand (Kv rms) –
28kv min
Bus bar
Page 25 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
13.1
Material & grade
13.2
Bus bar cross section area in sq mm
Bus bar rated current in amp
13.3
13.4
13.5
i)
at designed 40 deg.C ambient
ii)
at 50 deg.C ambient
Max temperature rise above reference
ambient of 40 deg C
Short time current withstand capacity for
3 seconds (in KA)
13.6
Bus bar clearances in mm P-P / P-E
13.7
Bus bar with insulation sleeve / barriers
13.8
Bus bar support insulator type
13.9
Bus bar support insulator voltage class
13.10
Bus bar support insulator minimum
creepage distance / mm
13.11
Earth bus bar material
13.12
Earth bus bar size
14
Circuit breaker type – SF6 or VCB
14.1
Rated voltage & frequency
14.2
Rated current in amp
14.3
14.4
14.5
14.6
Rated breaking current – KA rms
Symmetrical
Short time withstand capacity in KA for 3
sec
Rated making current - KA peak
Breaker total opening time at rated
breaking capacity (in milliseconds)
14.7
Number of breaks per pole
14.8
Total length of contact travel in mm
14.9
No of circuit breaker operation cycles
25% rated current -
(close & open) guaranteed at rated
50% rated current -
current, Electrical endurance class
75% rated current 100% rated current -
Page 26 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
No of breaker opening operations
14.10
guaranteed at rated fault current,
Electrical Endurance Class
No of breaker mechanical operation
14.11
cycles (close & open) guaranteed at zero
current , Mechanical endurance class
14.12
Contact material
14.13
Operating mechanism – trip free
Manual Spring charge type
14.14
Feeder circuit breaker (FCB) –VCB
14.14.1
Spring charging motor rating - Watt
14.14.2
Spring charging motor rated Dc voltage
14.14.3
Closing coil wattage & rated DC voltage
14.14.4
Trip coil wattage & rated DC voltage
14.15
15
Transformer CT class, ratio & Vk
Load break switch type – SF6 or VCB
15.1
Rated voltage & frequency
15.2
Rated current in amp
15.3
Load break switch total opening time at
rated current (in milliseconds)
15.4
Number of breaks per pole
15.5
Total length of contact travel in mm
25% rated current -
15.7
No of LBS close & open operation cycles
50% rated current -
guaranteed at
75% rated current 100% rated current -
No of LBS making operations guaranteed
15.8
at rated fault current, Electrical
endurance class
No of LBS close & open operations
15.9
guaranteed at zero current, Mechanical
endurance class
15.10
Contact material
Page 27 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
15.11
15.12
15.13
15.14
15.15
16.1
16.2
16.3
16.4
Operating mechanism type
Operating motor voltage with acceptable
% variation
Minimum permissible SF6 gas pressure
(For SF6 type RMU only)
Capacitor type cable voltage indication
provided?
Operation counter provided
Yes / No
Yes/ No
Disconnect switch continuous rating
(Amp)
Disconnect switch Short time withstand
rating -20kA for 3 sec minimum
One LBS open operation possible in the
event of loss of SF6 gas
DC charger rating in amps – min 10
Amp Dual for redundant operation
Yes / No
Yes/No
Yes/No
a
MCB rating at 230v AC input of charger
Amp
b
MCB rating at 24v DC output of charger
Amp
c
d
e
Charger heat sink temperature rise (max
55 deg C above ambient 40 deg C)
Voltage variation in 24v Dc output for
FRTU
Charger with natural cooling (no cooling
fans)
(Max +/-1 V)
Yes/No
Charger tested for input supply voltage
f
regulation test (input variation 150v-250v,
output Dc voltage variation +/- 1 volt
Yes/No
max)
g
Charger temperature rise test certificate
Submitted
Yes/No
16.5
DC battery SMF rating in Ah – 20Ah
standard
Yes/No
16.6
DC charger changeover – Diode rating
10A min
Yes/No
Page 28 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
17.1
17.2
18
19
Cable termination –
Height of power terminal from gland plate
mm
Torque required for tightening terminal
lug
Mimic diagram, labels & finish as per cl
no 12
Submission of RMU / component
catalogue
Yes / No
Yes/No
Unit price for Conversion kit offered
20
separately for converting the RMU from
single cable termination design to double
Yes / No
cable termination design
21
21.1
21.2
22
22.1
Earth Switch
Minimum number of operations at no
load- Mechanical Endurance class
Making capacity endurance of earth
switch – Electrical endurance class
Self Powered Relay – Make / Model
CT Input
Overcurrent-
22.2
IDMT Setting Range 4 element – Over
Current & Earth fault & steps
Earth FaultInstantaneous O/CInstantaneous E/FOver Current – Curves
22.3
Operating Time
Instantaneous
22.4
Pick up Current
22.5
Resetting Current
22.6
Relay Burden
22.7
Time Accuracy
22.8
Tripping Coil O/P – type & duration
Page 29 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
22.9
22.10
Fault Current Display
No of Fault Current Latching with time
stamping
22.11
Display Facility / Type
22.12
Operational Indicators
22.13
Potential Free Output Contacts
22.14
Thermal Withstand Capacity of Relay
23
Fault Passage Indicator
23.1
CBCT
a
Type
b
Mounting Arrangement
c
CT to indicator connection
d
ID of sensor
23.2
Earth Fault Indicator
a
Sensing Current
b
Sensing Time
c
Indication
d
Reset Time
e
Resetting Facility
f
Output Contact
g
Contact Rating
h
Aux Power Supply
i
Degree of Protection
j
Mounting Arrangement
k
Ambient Temperature
24
Current Transformer- Make
24.1
Ratio
24.2
Burden
24.3
Accuracy Class
25
26
Make / Model
Voltage Presence Indicator- Make /
Model
FRTU
Page 30 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
26.1
Make & Model No
26.2
No of DI Modules
26.2.1
Type I – 1CB + 2ISO
26.2.2
Type 2 – 2CB + 2ISO
26.3
No of DO Modules
26.3.1
Type I – 1CB + 2ISO
26.3.2
Type 2 – 2CB + 2ISO
26.4
26.4.1
No of AI Modules
Type 1/ Type 2
26.5
Make of Protocol converter
26.6
Modem
Type – CDMA / GSM
26.7
Speed – 800/1900 MHZ
Yes / No
Make – Visiontek / REL Utility Engineers
Yes / No
Ltd.
Yes / No
Chipset – ZTE / Equivalent
Yes / No
Interposing Relay with freewheeling
diode
Make
Rating
Model No
26.8
Terminal Blocks, Disconnecting type
fuses make
Bidder / Vendor seal / signature
---------------------------
Name of the bidder
Address of bidder
Name of contact person
Telephone no & email id
Page 31 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure D Recommended spares (Data by supplier)
List of recommended spares as following
Sr No
1
2
3
4
5
6
Description of spare part
Unit
No
No
Quantity
Page 32 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure E Typical scheme of RMU
a) 11kv RMU shall have Transformer circuit breakers (TCB) with Load break switches (LBS) or Feeder circuit
b) breakers (FCB) as per configuration defined in Purchase Requisition.
c) Motor drive for LBS or FCB is shown by letter ‘M’.
d) TCB shall be operated manually only with facility for remote shunt trip.
e) 11kv RMU shall be suitable for extension on sides for addition of LBS, TCB or FCB.
f) Fault passage indicator (FPI) including associated CT & connecting cable is shown by letter ‘F’.
Page 33 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure F Drawing of Bimetallic Ring Type Lug
Page 34 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure G Specification for Modem
Modem
RUIM Interface
SMS
Data
AT Commands
Interface
Communication
Interface
LED Indications
Connectors /
Switches
Power Supply
Enclosure
Mounting
Temperature
Antenna
Accessories
CDMA 800 MHZ
External RUIM 3.0V
Supports Text
Data circuit Asynchronous and non transparent Up to 153.6
kbps Autobaud rate (2400, 4800, 9600, 19200, 38400,
57600 bps) Fixbaud rate (300, 600, 1200, 9600,115200 bps)
RS-232 port for supporting AT commands, PPP Protocol
Remote management features like telnet & remotely download
facility.
Power ON, Network
RS-232 Serial, RUIM Card Holder, DC power
connector(Wago),SMA Antenna connector
6 – 30V DC (with reverse current protection)
Aluminium Extrusion
DIN Rail Mounting
Operating (-10 to 65 Degree Centigrade)
5db Magnetic Whip Antenna with 5-Meter cable
a) 1 Meter cable for connecting to external DC power source
(5V – 30V) b) Standard RS232 serial data cable(1 Meter)
Page 35 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure H Specification For Feeder Remote Terminal Unit For RMU
Page 36 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Page 37 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
Record of Revision
Page 38 of 55
SP-ERMUX-15-R5
Technical Specification For 11 KV Ring Main Unit & FRTU
1.0.0 Feeder Remote Terminal Units
This specification encompasses the requirements for Feeder Remote Terminal Units (FRTU’s) for
acquisition of real time status and control functions associated with selected 11 kV Ring Main Units (for
sites where 11 kV/415 V distribution transformers or capacitors are installed).
1.1.0 FRTU Architecture
The FRTU’s shall have an architecture that supports convenient installation, maintenance and expansion
features. Their configuration shall include a central processing module, I/O module Digital and Analogue
type. The FRTU should have web enable and Compatible for upload and download the configuration
program from remote location.
1 Central Processing Module
The central processing module (CPM) shall handle all protocol emulation I.e. IEC104, IEC103 and
MODBUS master, perform data acquisition, and execute control requests. It shall accept commands from
the master station, perform address recognition, assemble response messages in accordance with the
received command messages, and transmit these messages to the SCADA/DMS master station. The CPM
shall have RTC and also provide interfaces for a time Synchronisation from MCC over IEC104.
The CPM shall have user configurable routines / procedures to carry out connection establishment, link
failure detections and reconnection after failures for dialup connectivity. The parameters viz: user name &
password, baud rate, no. of retries after link failure shall be user configurable.
The CPM shall manage communications between all other functional modules of the FRTU and shall
determine the integrity of the FRTU. The processor shall provide diagnostic information in the message
structure that the SCADA/DMS shall monitor. A flag shall be set if the FRTU performs a restart for any
reason including power failure.
The CPM shall be programmable in a high level language like C. REL shall be able to program the FRTU
and manage the FRTU database from the FRTU test set and download parameters and configuration data
from the SCADA/DMS system.CPM shall have communication Connection with GSM/CDMA modem for
MCC Communication.
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Technical Specification For 11 KV Ring Main Unit & FRTU
1.1.2 I/O Module
Each I/O module shall be capable of interfacing with digital inputs, control output points and combinations
of point types. I/O modules shall be replaceable without reprogramming, redefinition of configuration
parameters or rewiring.
A control disable switch shall be provided within each I/O module. When the switch is in the control position,
the SCADA/DMS or test set shall have control of the digital control outputs. When the switch is in the disable
position, the digital control outputs shall be disabled. A status input contact shall be available to monitor the
position of this switch. The switch position shall be reported to the SCADA/DMS system. The required
number of I/Os points shall be the responsibility of the Contractor.
1.1.3 FRTU Time and Date Facility
The FRTU shall have an internal Real Time clock for data collection coordination and time tagging. This
shall include support for feeder fault detection. The FRTU internal RTC shall be maintained within hundred
(100) millisecond of the same time reference used by the respective SCADA/DMS. The FRTU
synchronization shall be accomplished by the communication protocol IEC104.
1.2.0 Functional Requirements
The FRTU’s shall include all hardware, software, and firmware necessary to meet the Input/ Output(I/O)
point requirements including input and output cards and output relays. FRTU Shall capable to communicate
with local devices like protection relays and Multifunction meters on protocol IEC103 & Modbus
1.2.1 Input / Output Point Types
The FRTU’s shall include facilities for handling status input and control output points. Requirements for
each type of I/O point are described in the following sub-sections.
1.2.2 Status Inputs
The Contractor shall supply the necessary sensing voltage, current limiting, input isolation, and bounce
filtering of all status inputs. The de-bounce period for each status input shall be individually configurable.
The input circuit of the status input modules shall be optically isolated from the external signal. In addition,
each input circuit shall include and LED indicator next to the circuit terminations to show the status of the
associated input contact.
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The state of each status point shall be reported to the SCADA/DMS on a contention basis. That is, a status
point shall not be reported unless the point state has changed from the last scan. The FRTU shall also
report the state of selected status points upon receipt of a demand scan request from the SCADA/DMS.
The FRTU’s shall include the following types of status input points:
1) Single Contact, Two-State Status: For single contact, two-state status points, a single contact shall
represent both states of the monitored device. One position
of the contact shall indicate an alarm or failure condition, while the opposite state of the contact shall
indicate the normal condition.
2) Double Contact, Two-State Status: For double contact, two-state status input points; separate contacts shall
be provided for representing each state of the monitored device. One contact shall indicate an OPEN condition of
the monitored device. The other shall indicate a CLOSED condition. The contacts shall be treated as a
complimentary pair. Conflicting contact positions (e.g., either indicates CLOSED or OPEN) shall be labeled
INVALID.
1.2.3 Control Outputs
The FRTU’s shall include on/off device control points to support control actions initiated from the SCADA/DMS
master stations. The FRTU’s shall perform on/off control actions using complimentary pairs of contact outputs.
One contact output shall perform the ON control action, and a second output contact shall perform the OFF
control action. The FRTU’s shall be designed such that only one output in a complimentary pair can be activated
at a time. For single point indications FRTU shall also support single command output.
To support the above capabilities, the FRTU’s shall include momentary control outputs as required by the
feeder device being controlled. Each momentary control output shall provide a contact closure (pulse) that
shall have programmable pulse duration. The pulse duration shall be adjustable on an individual point basis
from 0.1 to 60 seconds in increments of 0.01 seconds.
FRTU control outputs shall be equipped with high power relays with free-wheeling diodes that are integral to the
FRTU so that external auxiliary control relays are not required. The associated high and low control power shall be
obtained from the dc power supply in the switch. The voltage rating of the control output contacts shall be 24 V
DC. All control outputs shall be capable of driving a load of eight (8) amps at the primary control voltage with
provision for an additional NO contact for DI status of Command Execute Acknowledgement
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wired up to terminal blocks. External auxiliary control relays are not preferred, but may be applied if integral
relays do not satisfy the above ratings. These relays shall be supplied by the Contractor.
All control points shall follow a Select - Check back – Before - Operate (SCBO) procedure for control
operation. The SCBO procedure shall be equivalent to the following:
1. The point selection command is received from the SCADA/DMS master station.
2. The FRTU checks that no other point is selected.
3. The FRTU selects the addressed point and transmits a selection confirmation to the SCADA/DMS.
4. The FRTU starts the command receipt timer and checks that only the required point remains
selected and no other points become selected.
5. The operate command is received from the SCADA/DMS.
6. The FRTU verifies the operate command and energizes the selected control point relay for a
predetermined time.
Point selection shall be canceled automatically following the completion of the control action, and reselection of the point shall be required for subsequent control actions.
1.2.4 Input / Output Point Counts
The FRTU’s shall be equipped to handle the I/O point requirements as per each FRTU types described in
Annexure-1.
All I/O channels provided (used as well as additional / spares) irrespective of immediate application shall
be wired from FRTU I/O card along with interposing relays for DOs to the associated terminal strips in the
cabinet with proper segregation and identification of Digital inputs and Digital outputs.
It shall be possible to expand the FRTU capacity by an additional twenty percent (20%) of the initially
delivered (including spares) I/O points by providing space for adding cards and terminations at future date.
1.2.5 Analog Inputs
FRTU shall be able to capture Analog values from current & voltage transducers and communicate
the Analog Measured Information (AMI) to control centre through communication media in the user
configurable intervals varies from sec to min.
Unipolar and bipolar analog measurements shall be collected by the AI cards. Input to the cards shall be
programmable for various mA and V input ranges.
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Technical Specification For 11 KV Ring Main Unit & FRTU
1.2.6 Programmable Logic Control (PLC)
The FRTU shall be provided with a PLC Module. The PLC module shall have access to the controlling process
via its process interface imaged in the FRTU process DB actualized by the internal communication. That allows
to use nearly all process information from direct connected process signals as well as from process data points
received via serial communication line. Control information for actuators to the process will be handled in the
same way from the PLC to the physical output signals etc. The overall transaction time for a PLC task is
therefore to be given by the PLC cycle time plus the update time between the process actuators and sensors and
the PLC's FRTU process DB.
Programming of the PLC program is to be done by a specific PLC programming tool. The integration of
the PLC task and the link between the IO interfaces of the PLC to the real process signals is to be
supported by FRTU Configuration Utility together with the PLC programming tool.
More than one PLC task shall be active. The FRTU shall allow having more than one PLC module in the
FRTU running.
1.2.7 FRTU Data Communications
The communication between the FRTU’s and BCC/MCC shall be through RCIL’s communication CDMA and
GSM cellular network using Wireless VPN. Alternatively FRTU’s shall also communicate with BCC/MCC
wherever RCIL’s communication fiber network is available. The FRTU’s shall support communications using
the IEC 608705-104 for MCC/BCC and IEC 608705-103, Modbus set of protocols for local devices.
Contractor shall provide Interoperability document specifying all the sets of parameters / functions
implemented by its device. The message security defined in the protocol should be fully implemented, and if
needed later, a convenient means of changing the communication protocol in the field should be provided.
The FRTU’s shall have Required serial ports, used for communication with slave local devices,
communication with BCC and MCC and RS485 port for Modbus communication with IEDs. The FRTU shall
also have one Ethernet port for diagnostic and communication with MCC / BCC in addition to the serial
ports. Each of the serial ports shall be individually selectable in RS-232 or RS485 mode and for operation
from 9,600 to 38,400 bps. FRTU’s shall support communication with redundant masters installed at both
BCC and MCC ie. 4 masters.
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Technical Specification For 11 KV Ring Main Unit & FRTU
1.3.0 FRTU Enclosures
Wall mounted / Free standing enclosures conforming to IEC 529, with an Index of Protection (IP) of 52 or
better as per drawing approved by engineering in charge, shall be provided for housing the FRTU
hardware, Space for battery/ battery charger and Modem. The enclosure shall be fabricated using 2 mm
thick CRC MS Steel and powder coated using seven tank process. The shade shall be RAL – 7035 paint
shade.
The dimensions shall be suitable to accommodate FRTU CPM and I/O modules, power supply accessories,
Multifunction meter, Battery/Battery charger, terminal blocks, communication modem with power adaptor,
Ethernet switch for FO connection and ease of intra-panel wiring/termination and maintenance thereafter.
Suitably sized PVC perforated channels to be used for routing intra-panel wiring. The front access door shall
be hinged on cabinet with a common lock & key, locking arrangement should be special type for extra
protection from theft. Removable type gland plates shall be provided at bottom of enclosure with 8-12 nos.
knock out holes for single compression glands for control cable entry. Provision of entry shall be kept for
extending CDMA and GSM modem antenna outside the enclosure. Alternately REL shall also have an option
to mount communication switch connecting to optical fiber network.
Suitable ventilation, if necessary forced ventilation, and louver with dust filters shall be provided to
maintain operating temperature under permissible limits of electronic components.
Contractor shall indicate gross weight of FRTU in GA drawing.
Alternately Fiber Reinforced Plastic (FRP) enclosure with suitable thickness and dimension may also be
quoted.
1.4.0 FRTU Power Supply
Power supply for FRTU shall be on 24V DC system which would be made wired from RMU
switchgear Battery Charger system to FRTU cabinet. Contractor shall make the arrangement the
Battery/Battery charger in FRTU enclosure from RMU if required with completely wired up and
required accessories like MCB, TB Etc on engineering in charge instruction.
The main DC circuits shall be protected by incoming circuit breakers. Each circuit shall be tapped through
single pole MCBs so as to provide an individual DC feed to each of the I/O modules, modems and protocol
converters. Contractor shall provide maximum power consumption data of each of the type of FRTU.
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Technical Specification For 11 KV Ring Main Unit & FRTU
1.5.0 SCADA/DMS Adaptation Services
Contractor shall be responsible for installation of FRTU enclosure on wall or Ground with RCC or
Painted MS plinth that to be provided by contractor as per engineering in-charge instruction. All field
wiring of Digital I/Os, Analog Signals, Multifunction meter CT and PT including CT installation,
Additional FPI, RS485 wiring from Protection relays and modem shall be made by Contractor.
FRTU and IEDs configuration and PLC logic need to be made by Contractor as per BSES
requirement.
Laying and Connection of Aux supply cable for FRTU and RMU Battery charger to be made by
contractor and supply point to be provided by BSES. Contactor shall make the shifting of
Battery/Battery Charger from RMU to FRTU Panel and install it in FRTU enclosure with complete
wiring and required accessories like MCB, TB Etc on engineering in charge instruction.
Cable tray installation in the substation to be done by Contractor for cable laying as per engineering
in-charge instruction.
Cable glanding, laying and termination for all cable types for all signal as per Annexure-3 (I/O List)
and given in adaptation material Annexure-2 to be done by contractor as per engineering in charge
instruction.
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Technical Specification For 11 KV Ring Main Unit & FRTU
1.6.0 FRTU Test Systems
The Contractor shall supply FRTU test systems for performing the functions listed below. Portable
computers shall be used for this purpose. The FRTU test system shall comply with the following
requirements:
1
Each test system shall support all maintenance aspects: verifying proper operation, troubleshooting,
reconfiguring, and setting operational parameters for the FRTU’s.
2
The test systems shall support all functional capabilities of the FRTU’s, including functions which are
not explicitly required in these Technical Specifications and functions which may not be included in the
delivered FRTU’s.
3
It shall be possible to use a test system locally at the site of the FRTU under test, and also remotely
wherever access can be obtained to the communication channel of the FRTU.
4
All the required data rates shall be easily selectable.
5
It shall be possible to use the test systems to monitor communications between the respective
SCADA/DMS and the FRTU’s by selecting specific data streams, or portions of such data streams, both to
and from FRTU. The data shall be displayed in a form that is easy for the user to interpret.
6
It shall be possible to connect the test system directly to the FRTU and to use the test system to
perform all necessary FRTU management and expansion functions, monitor all stored data, monitor
FRTU inputs, exercise FRTU outputs, and diagnose and troubleshoot the FRTU. It shall also be possible
to use the test system as a local user interface at the FRTU location.
7
No programming skills shall be required to use the field test system. Interactive procedures relying
mostly on pull down menus shall be used. The user shall not be required to type in commands, and shall
be prompted when data entry is needed.
8
The test system shall be ruggedly constructed and suitable for field work and transportation in trucks.
All cables, connectors, equipment, and documentation associated with their operation shall be included
and stored either within the test system package or in suitable separate containers.
The test systems shall operate on internal battery and 220 V. AC, 50 Hz
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Technical Specification For 11 KV Ring Main Unit & FRTU
1.7.0 Software / Firmware
The term software is used in this Technical Specification to mean software or software implemented through
firmware. All software shall be implemented according to the Contractor’s latest established design and
coding standards. Complete and comprehensive documentation shall be provided for all software. Contractor
may consider providing windows based software as it is preferred for its user friendliness. Contractor shall
provide the FRTU configuration software, PLC Function software and training to BSES Engineers for the
purpose of maintenance and configuration modification.
1.8.0 General
A real-time non-proprietary operating system that is capable of managing the FRTU applications
shall be provided.
This software shall provide automatic restart of the FRTU upon power restoration, memory parity errors,
hardware failures, and manual request. The software shall initialize the FRTU and begin execution of the
FRTU functions without intervention by the SCADA/DMS master station. All restarts shall be reported to the
SCADA/DMS.
The software shall be prepared in a high level language and shall be documented in detail. No separate
licensing charges or agreements shall attach to the FRTU software or its underlying operating system.
In order to easily support the system under continuously changing site conditions all protocol, configuration,
and application data must be contained in easily programmable non-volatile memory such as Flash EPROM.
The FRTU design shall be independent of any communication protocol that would impose restrictions on
the flexibility or functionality of the FRTU. Protocol changes shall be accomplished by software/firmware
changes only.
1.8.1 Diagnostic Software
Software shall be provided to continuously monitor operation of the FRTU and report FRTU hardware errors to
the SCADA/DMS. The software shall check for memory, processor, and input/output errors and failures. It is
desirable that internal diagnostics be sufficiently detailed to detect malfunctions to the level of the smallest
replaceable component.
The FRTU shall facilitate isolation and correction of all failures and shall include features that promote rapid fault isolation
and component replacement. All functional module nodes shall be designed with integrated on-line diagnostic functions.
The results of these diagnostics
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Technical Specification For 11 KV Ring Main Unit & FRTU
shall be reported to the central processing module. The central module shall store this information and report
it to the SCADA/DMS as permitted by the protocol. FRTU shall be able to access from remote (BCC/MCC)
for down loading configuration.
1.9.0 FRTU Testing
1.9.1 Type Tests
The FRTU’s shall have passed type tests carried out by government accredited labs and in accordance with
IEC 255-4, 255-5, 255-6, 801-2, and 801-3 to demonstrate that the FRTU’s comply with the ratings stated in
these standards. As a minimum, certificates for the following type tests shall be furnished:
1. Dielectric test
2. Impulse voltage withstand test
3. High frequency disturbance test
4. Thermal requirement test
5. Mechanical requirement test
6. Limiting dynamic value test
7. Contact performance test
8. Electromagnetic radiation susceptibility test
9. Electrostatic discharge susceptibility test
1.9.2 Routine Tests
The FRTU’s shall pass the Manufacturer’s standard routine tests in accordance with the referenced
standards.
In addition to the tests described in the IEC standards, the routine tests and test report of the FRTU’s shall
include the following:
1. Visual tests to confirm that construction and sizing requirements have been met.
2. Rigorous testing of each input and output function of the FRTU’s. This shall include the fault detection
and the disturbance data storage functions as well as the operation and performance of the FRTU time
and date facilities.
3. Verification of the use of the FRTU test equipment for maintenance and testing.
Verification of the ability to download parameters and configuration data from the SCADA/DMS master station.
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Technical Specification For 11 KV Ring Main Unit & FRTU
5. Verification that FRTU software and firmware support FRTU sizing and expansion requirements.
6. Verification of successful communications (i.e. protocols) at all the required data rates.
7. Testing for secure operation, including verification that: a) Communication errors are detected. b) SCBO
procedures are properly performed for control outputs. c) No erroneous control operation occurs and no
incorrect data is generated when power is turned on or off or when operating on low battery voltage.
1.10.0 FRTU Spares:
Bidder shall indicate recommended spares for 5 years trouble free operations.
1.11.0
FRTU Types:
FRTU’s are categorized as per specification, according to their DI/ DO/AI Channel and MFMs
requirements as indicated in the annexure – 1
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Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure – 1: Guaranteed Technical Particulars
FRTU Types
1
2
Digital Input
Channels
32
48
Digital Output
Channels
16
24
Analogue
Channels
6
6
MFMs
4
4
(Vendors shall furnish the General Technical Particulars along with their offer)
Sr. No.
Description
Buyer’s Requirement
Vendors Data
1
Vendors Name
2
Guarantee period
5 yrs
3
Make of FRTU base module
4
No. of DI modules
Type 1
2 x 16
Type 2
3 x 16
5
No. of DO modules
Type 1
2x8
Type 2
3x8
6
No. of AI modules
Type 1 to 2
1x 6
Dimensions & Weight of FRTU
7
8
9
Type 1
Type 2
Make of protocol converter
Interposing relay with
freewheeling diode
Make
Capacity
Model
10
12
Multifunction Meter
Make
CT/PT
CT
Make
CT RATIO
AC & DC MCB
13
Terminal Blocks
14
Disconnecting type fuses
11
Vendor shall Provide
Vendor shall provide
ABB / Tyco
>8 A
CR-P with 2C/O contacts
/
Eqv
Rishabh Integra 1540
5A/110V 4 WIRE
AE/STANDARD
400/5A
Merlin & Gerin / Protec /
Indokopp
Elmex / Connectwell /
Phoenix
Elmex / Connectwell /
Phoenix
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Technical Specification For 11 KV Ring Main Unit & FRTU
15
Enclosure
Sheet steel thickness
Painting process
Construction of steel
according to IEC 529 , index
of protection
Shade
Louvers with filters
2 mm
7 tank
IP52
RAL-7035
2 Nos
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Technical Specification For 11 KV Ring Main Unit & FRTU
Annexure – 2: FRTU Adaptation Bill of Materials.
A-DT SUBSTATION ADAPTATION MATERIALS FOR DMS
SR. NOS.
1
2
MATERIAL DESCRIPTION
a) FRTU SYSTEM HOUSED IN SUITABLY SIZED PANEL FEBRICATED
OUTOF 14 GAUGE CRC SHEET DUILY POWDER COATED PAINT
SPACE AVAILABILTY FOR BATTERY CHARGER AND BATTERY,
SUITABLE FOR INDOOR AND OUTDOOR PURPOSE AND
COMPARISING OF:FRTU HAVING 24VDC AUX SUPPLY, PROCESSOR,POWER SUPPLY,
24VDC DIGITAL INPUTS-48 NOS. RELAY OUTPUT-16NOS,010VDC OR 4-20MA ANALOG INPUT-6NOS,MFMs CT5A/PT110V
4W-4NOS, FRTU MODBUS MASTER/RS485 FOR MFMs, IEC-104
FOR MCC COMMUNICATION THRU CDMA MODEM.OUTPUT
SHOULD BE WIRED WITH SUITABLE RATTING CMRs TO OPERATE
RMU MOTORS.DO COMMAND FEED BACK ACKNOWLEGED BY
FRTU. PANEL SHOULD BE WIRED WITH ALL REQUIRED
ACCESSORIES.
b) PANEL DESIGN SHOULD BE APPROVED BY ENGINEERING
INCHARGE.
a) FRTU SYSTEM HOUSED IN SUITABLY SIZED PANEL FEBRICATED
OUTOF 14 GAUGE CRC SHEET DUILY POWDER COATED PAINT
SPACE AVAILABILTY FOR BATTERY CHARGER AND BATTERY,
SUITABLE FOR INDOOR AND OUTDOOR PURPOSE AND
COMPARISING OF:FRTU HAVING 24VDC AUX SUPPLY, PROCESSOR,POWER SUPPLY,
24VDC DIGITAL INPUTS-32 NOS. RELAY OUTPUT-12NOS,010VDC OR 4-20MA ANALOG INPUT-6NOS,MFMs CT5A/PT110V
4W-4NOS, FRTU MODBUS MASTER/RS485 FOR MFMs, IEC-104
FOR MCC COMMUNICATION THRU CDMA MODEM.OUTPUT
SHOULD BE WIRED WITH SUITABLE RATTING CMRs TO OPERATE
RMU MOTORS. DO COMMAND FEED BACK ACKNOWLEGED BY
FRTU. FRTU PANEL SHOULD BE WIRED WITH ALL REQUIRED
ACCESSORIES.
b) PANEL DESIGN SHOULD BE APPROVED BY ENGINEERING
INCHARGE.
UOM
QTY
EA
15
EA
10
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Technical Specification For 11 KV Ring Main Unit & FRTU
3
4
18C*0.75 SQMM, ARM, FRLS, FINE MULTISTAINED COPPER
CABLE AS PER ISI STANDARD FOR DI
CT FOR 11KV FEEDERS CT RATIO 400/5A
MTRS
750
EA
100
5
9C*0.75 SQMM, ARM, FRLS, FINE MULTISTAINED COPPER
CABLE AS PER ISI STANDARD FOR DO
MTRS
750
6
8C*1.5 SQMM, ARM, FRLS, FINE MULTISTAINED COPPER CABLE
AS PER ISI STANDARD FOR CT
MTRS
750
7
2C*1.5 SQMM, ARM, FRLS, FINE MULTISTAINED COPPER CABLE
AS PER ISI STANDARD FOR AUX SUPPLY IN FRTU
MTRS
500
8
2C*2.5 SQMM, ARM, FRLS FINE MULTISTAINED COPPER CABLE
AS PER ISI STANDARD FOR SUPPLY IN RMU MOTORS
MTRS
500
MTRS
1200
MTRS
100
EA
400
MTRS
500
EA
30
EA
30
EA
25
9
10
11
12
13
14
15
MULTI-STAINED COPPER FEXIBLE WIRE FRLS 2.5SQMM AS PER
ISI STANDARD FOR RMU CT CONNECTION R-COLOR,Y-COLOR,BCOLOR, BLACK
COPPER FLEXIBLE WIRE MESH 12MM IN WITDH
DISCONNECTING TYPE CT TERMINAL BLOCK 4SQMM
200*50MM GI PERFORATED CABLE TRAY
MCB DOUBLE POLE 16AMP "C" CURVE
MCB DOUBLE POLE 10AMP "C" CURVE
PLITH RCC/ IRON ANGLE FOR OTDOOR DT STATION
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B-DT SUBSTATION ADAPTATION SEVICES FOR DMS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
FRTU PANEL INSTALLATION, GROUTING WITH PLINTH AND OTHER REQUIRED
ACCESSORIES
FRTU FILE/MFMs/IEDs CONFIGURATIIN AND TESTING
INST/TEST/COMM OF 18C*0.75SQMM ARM CABLE
INST/TEST/COMM OF 9C*0.75SQMM ARM CABLE
INST/TEST/COMM OF 8C*1.5SQMM ARM CABLE
INST/TEST/COMM OF 2C*1.5SQMM ARM CABLE
INST/TEST/COMM OF 2C*2.5SQMM ARM CABLE
INST/TEST/COMM OF DISCONNECTING CT TERMINAL BLOCK
INST/TEST/COMM OF BATTERY AND BATTERY CHARGER
INST/TEST/COMM OF CABLE TRAY WITH SUPPORTS
INST/TEST/COMM OF RCC/IRON ANGLE PLINTH
INST/TEST/COMM OF MCB DP 16A AND 10A
INST/TEST/COMM OF MODEM
INST/TEST/COMM OF ADDITIONAL FPI AND CBCT AND COPPER WIRE MESH
TRANSPORTATION FROM SITE STORE TO SITES
EA
25
EA
MTRS
MTRS
MTRS
MTRS
MTRS
EA
EA
MTRS
EA
EA
EA
25
750
750
750
500
500
400
25
500
25
60
25
EA
20
EA
50
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Annexure – 3: IO List
Digital Inputs
Isolator
Circuit Breaker
Common Signals
Bus Coupler
Isolator ON
Isolator OFF
Earth Status
Fault Indicator Status
Local/Remote
CB ON
CB OFF
Earth Status
Auto Trip
SF6 Low
Battery Charger Fail
Command Acknowledgement
Door Open/Close
Bus Coupler ON
Bus Coupler OFF
Earth Status
Digital Outputs
Isolator ON
Isolator OFF
FPI Reset
Bus Coupler ON
Bus Coupler OFF
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